ppapi/tests/test_case.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ppapi/tests/test_case.h"
   6
   7 #include <string.h>
   8
   9 #include <algorithm>
  10 #include <sstream>
  11
  12 #include "ppapi/cpp/core.h"
  13 #include "ppapi/cpp/module.h"
  14 #include "ppapi/tests/pp_thread.h"
  15 #include "ppapi/tests/test_utils.h"
  16 #include "ppapi/tests/testing_instance.h"
  17
  18 namespace {
  19
  20 std::string StripPrefix(const std::string& test_name) {
  21   const char* const prefixes[] = {
  22       "FAILS_", "FLAKY_", "DISABLED_" };
  23   for (size_t i = 0; i < sizeof(prefixes)/sizeof(prefixes[0]); ++i)
  24     if (test_name.find(prefixes[i]) == 0)
  25       return test_name.substr(strlen(prefixes[i]));
  26   return test_name;
  27 }
  28
  29 // Strip the TestCase name off and return the remainder (i.e., everything after
  30 // '_'). If there is no '_', assume only the TestCase was provided, and return
  31 // an empty string.
  32 // For example:
  33 //   StripTestCase("TestCase_TestName");
  34 // returns
  35 //   "TestName"
  36 // while
  37 //   StripTestCase("TestCase);
  38 // returns
  39 //   ""
  40 std::string StripTestCase(const std::string& full_test_name) {
  41   size_t delim = full_test_name.find_first_of('_');
  42   if (delim != std::string::npos)
  43     return full_test_name.substr(delim+1);
  44   // In this case, our "filter" is the empty string; the full test name is the
  45   // same as the TestCase name with which we were constructed.
  46   // TODO(dmichael): It might be nice to be able to PP_DCHECK against the
  47   // TestCase class name, but we'd have to plumb that name to TestCase somehow.
  48   return std::string();
  49 }
  50
  51 // Parse |test_filter|, which is a comma-delimited list of (possibly prefixed)
  52 // test names and insert the un-prefixed names into |remaining_tests|, with
  53 // the bool indicating whether the test should be run.
  54 void ParseTestFilter(const std::string& test_filter,
  55                      std::map<std::string, bool>* remaining_tests) {
  56   // We can't use base/strings/string_util.h::Tokenize in ppapi, so we have to
  57   // do it ourselves.
  58   std::istringstream filter_stream(test_filter);
  59   std::string current_test;
  60   while (std::getline(filter_stream, current_test, ',')) {
  61     // |current_test| might include a prefix, like DISABLED_Foo_TestBar, so we
  62     // we strip it off if there is one.
  63     std::string stripped_test_name(StripPrefix(current_test));
  64     // Strip off the test case and use the test name as a key, because the test
  65     // name ShouldRunTest wants to use to look up the test doesn't have the
  66     // TestCase name.
  67     std::string test_name_without_case(StripTestCase(stripped_test_name));
  68
  69     // If the test wasn't prefixed, it should be run.
  70     bool should_run_test = (current_test == stripped_test_name);
  71     PP_DCHECK(remaining_tests->count(test_name_without_case) == 0);
  72     remaining_tests->insert(
  73         std::make_pair(test_name_without_case, should_run_test));
  74   }
  75   // There may be a trailing comma; ignore empty strings.
  76   remaining_tests->erase(std::string());
  77 }
  78
  79 }  // namespace
  80
  81 TestCase::TestCase(TestingInstance* instance)
  82     : instance_(instance),
  83       testing_interface_(NULL),
  84       callback_type_(PP_REQUIRED),
  85       have_populated_filter_tests_(false) {
  86   // Get the testing_interface_ if it is available, so that we can do Resource
  87   // and Var checks on shutdown (see CheckResourcesAndVars). If it is not
  88   // available, testing_interface_ will be NULL. Some tests do not require it.
  89   testing_interface_ = GetTestingInterface();
  90 }
  91
  92 TestCase::~TestCase() {
  93 }
  94
  95 bool TestCase::Init() {
  96   return true;
  97 }
  98
  99 // static
 100 std::string TestCase::MakeFailureMessage(const char* file,
 101                                          int line,
 102                                          const char* cmd) {
 103   std::ostringstream output;
 104   output << "Failure in " << file << "(" << line << "): " << cmd;
 105   return output.str();
 106 }
 107
 108 #if !(defined __native_client__)
 109 pp::VarPrivate TestCase::GetTestObject() {
 110   if (test_object_.is_undefined()) {
 111     pp::deprecated::ScriptableObject* so = CreateTestObject();
 112     if (so) {
 113       test_object_ = pp::VarPrivate(instance_, so);  // Takes ownership.
 114       // CheckResourcesAndVars runs and looks for leaks before we've actually
 115       // completely shut down. Ignore the instance object, since it's not a real
 116       // leak.
 117       IgnoreLeakedVar(test_object_.pp_var().value.as_id);
 118     }
 119   }
 120   return test_object_;
 121 }
 122 #endif
 123
 124 bool TestCase::CheckTestingInterface() {
 125   testing_interface_ = GetTestingInterface();
 126   if (!testing_interface_) {
 127     // Give a more helpful error message for the testing interface being gone
 128     // since that needs special enabling in Chrome.
 129     instance_->AppendError("This test needs the testing interface, which is "
 130                            "not currently available. In Chrome, use "
 131                            "--enable-pepper-testing when launching.");
 132     return false;
 133   }
 134
 135   return true;
 136 }
 137
 138 void TestCase::HandleMessage(const pp::Var& message_data) {
 139 }
 140
 141 void TestCase::DidChangeView(const pp::View& view) {
 142 }
 143
 144 bool TestCase::HandleInputEvent(const pp::InputEvent& event) {
 145   return false;
 146 }
 147
 148 void TestCase::IgnoreLeakedVar(int64_t id) {
 149   ignored_leaked_vars_.insert(id);
 150 }
 151
 152 #if !(defined __native_client__)
 153 pp::deprecated::ScriptableObject* TestCase::CreateTestObject() {
 154   return NULL;
 155 }
 156 #endif
 157
 158 bool TestCase::EnsureRunningOverHTTP() {
 159   if (instance_->protocol() != "http:") {
 160     instance_->AppendError("This test needs to be run over HTTP.");
 161     return false;
 162   }
 163
 164   return true;
 165 }
 166
 167 bool TestCase::ShouldRunAllTests(const std::string& filter) {
 168   // If only the TestCase is listed, we're running all the tests in RunTests.
 169   return (StripTestCase(filter) == std::string());
 170 }
 171
 172 bool TestCase::ShouldRunTest(const std::string& test_name,
 173                              const std::string& filter) {
 174   if (ShouldRunAllTests(filter))
 175     return true;
 176
 177   // Lazily initialize our "filter_tests_" map.
 178   if (!have_populated_filter_tests_) {
 179     ParseTestFilter(filter, &filter_tests_);
 180     remaining_tests_ = filter_tests_;
 181     have_populated_filter_tests_ = true;
 182   }
 183   std::map<std::string, bool>::iterator iter = filter_tests_.find(test_name);
 184   if (iter == filter_tests_.end()) {
 185     // The test name wasn't listed in the filter. Don't run it, but store it
 186     // so TestingInstance::ExecuteTests can report an error later.
 187     skipped_tests_.insert(test_name);
 188     return false;
 189   }
 190   remaining_tests_.erase(test_name);
 191   return iter->second;
 192 }
 193
 194 PP_TimeTicks TestCase::NowInTimeTicks() {
 195   return pp::Module::Get()->core()->GetTimeTicks();
 196 }
 197
 198 std::string TestCase::CheckResourcesAndVars(std::string errors) {
 199   if (!errors.empty())
 200     return errors;
 201
 202   if (testing_interface_) {
 203     // TODO(dmichael): Fix tests that leak resources and enable the following:
 204     /*
 205     uint32_t leaked_resources =
 206         testing_interface_->GetLiveObjectsForInstance(instance_->pp_instance());
 207     if (leaked_resources) {
 208       std::ostringstream output;
 209       output << "FAILED: Test leaked " << leaked_resources << " resources.\n";
 210       errors += output.str();
 211     }
 212     */
 213     const int kVarsToPrint = 100;
 214     PP_Var vars[kVarsToPrint];
 215     int found_vars = testing_interface_->GetLiveVars(vars, kVarsToPrint);
 216     // This will undercount if we are told to ignore a Var which is then *not*
 217     // leaked. Worst case, we just won't print the little "Test leaked" message,
 218     // but we'll still print any non-ignored leaked vars we found.
 219     int leaked_vars =
 220         found_vars - static_cast<int>(ignored_leaked_vars_.size());
 221     if (leaked_vars > 0) {
 222       std::ostringstream output;
 223       output << "Test leaked " << leaked_vars << " vars (printing at most "
 224              << kVarsToPrint <<"):<p>";
 225       errors += output.str();
 226     }
 227     for (int i = 0; i < std::min(found_vars, kVarsToPrint); ++i) {
 228       pp::Var leaked_var(pp::PASS_REF, vars[i]);
 229       if (ignored_leaked_vars_.count(leaked_var.pp_var().value.as_id) == 0)
 230         errors += leaked_var.DebugString() + "<p>";
 231     }
 232   }
 233   return errors;
 234 }
 235
 236 // static
 237 void TestCase::QuitMainMessageLoop(PP_Instance instance) {
 238   PP_Instance* heap_instance = new PP_Instance(instance);
 239   pp::CompletionCallback callback(&DoQuitMainMessageLoop, heap_instance);
 240   pp::Module::Get()->core()->CallOnMainThread(0, callback);
 241 }
 242
 243 // static
 244 void TestCase::DoQuitMainMessageLoop(void* pp_instance, int32_t result) {
 245   PP_Instance* instance = static_cast<PP_Instance*>(pp_instance);
 246   GetTestingInterface()->QuitMessageLoop(*instance);
 247   delete instance;
 248 }
 249
 250 void TestCase::RunOnThreadInternal(
 251     void (*thread_func)(void*),
 252     void* thread_param,
 253     const PPB_Testing_Private* testing_interface) {
 254   PP_Thread thread;
 255   PP_CreateThread(&thread, thread_func, thread_param);
 256   // Run a message loop so pepper calls can be dispatched. The background
 257   // thread will set result_ and make us Quit when it's done.
 258   testing_interface->RunMessageLoop(instance_->pp_instance());
 259   PP_JoinThread(thread);
 260 }